Apparatus for treating resinous wood.



PATENTED NOV. 21, 1905.

v E. B. WEED. APPARATUS FOR TREATING RESINOUS WOOD.

APPLICATION FILED FEB. 15,1901- fnveniorr 62AM; 0 MW 06 at: @22 W.

by S- UNITED STATES PATENT OFFICE.

EDWARD B. WEED, OF CLEVELAND,

OHIO ,ASSIGNOR TO WEED DISTILL- ING AND MANUFACTURING COMPANY, OF NEWYORK, N. Y., A COR- PORATION OF NEW YORK.

APPARATUS FOR TREATING RESINOUS WOOD Specification of Letters Patent.

Patented Nov. 21, 1905.

Application filed February 15, 1901. Serial No- 47,418.

10 all whom it may concern:

Be it known that I, EDWARD B. WEED, a citizen of the United States,residing in Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented certain new and useful Apparatus for Treating Resinous WVood,of which the following is a specification.

The object of this invention is to permit turpentine or similardesirable products to be extracted from resinous wood; and it consistsin the new and novel features of construction and combination of partshereinafter set forth and claimed.

In the drawings Figure 1 represents a side elevation, partly in section,of the apparatus. Fig. 2 is a detailed view representing a portion ofthe steam-pipes.

The wood to be treated is placedin a still a, provided on its side witha door or opening Z) and on its top with a condensing cap or worm c. Asteam-pipe (Z is placed on or near the bottom of the still and isprovided with a number of arms 6, having perforations f' formed therein.The wood is supported a suitable distance above the steam-pipes by meansof a netting g, secured to the sides of the still. 'The bath 2' of resinor similar material is supplied to the still by means of a supply-pipej,providedwith a number of openings in, that is arranged around theinterior of the still a suitable distance above the top of the wood.Said supply-pipe communicates or is formed integral with a worm or coilZ, which is located in a suitable furnace or fire-box m, so that it maybe heated. The coil is connected, by means of a pipe at, provided with avalve 41/, With a pump 0 of any suitable construction adapted to handleliquid or semiliquid material. Preferably the pump is placed near aboiler p and communicates with the interior thereof by means of a pipeq, having a valve 1' therein between the boiler and a branch pipe 8,which communicates with the interior of the still. Said branch pipe 8 isalso provided with a valve 2/, preferably placed near the pipe q. Thesupply-pipe n is also provided with a branch pipe at, having a valve toand communicating with the lower end of the pipe 8 or directly with theinterior of the still. A pipe w, having a valve :12, communicates withthe pipe n and also with the interior of the boiler. If desired, anoverflowpipe 3 provided with a valve 2 to communicate with thestill at apoint approximately at the height of the wood contained therein, may bearranged between the still and the boiler, so that the bath contained inthe still will flow by gravity into the boiler when the valve 2 is open.

The boiler is first filled with a sufficient quantity of the resin orother material to be used in the bath, which is then heated so that itcan be handled by the pump. The valves 00, t, and a are closed, and thebath is pumped through the coil and the supply-pipe j into the interiorof the still until the resinous wood IL is entirely or partiallyimmersed. The valve 'r is then closed and the valve tis opened, so thatthe pump being set in operation draws the material forming the bath fromthe bottom of the still through the pipe 8 and returns it to the stillthrough the pipe mcoil Z, and perforated pipe 7'. The bath is thusforced, by means of the pump, through the coil, which is heated, so thatthe bath can be maintained at an equable temperature. As it issues fromthe perforations in the supply-pipe it is met by the ascending steam,which meanwhile has been admitted into the still through the piped onthe bottom of the still. The ascending vapors are I collected by the capon the top of the still and are readily condensed in the condensing-wormcommunicating therewith. When the resinous products are extracted fromthe wood, the valves n and u are closed and the valve a: is opened, sothat the material forming the bath is returned, by means of pipes s andw, to the boiler. A corresponding cap and worm may be provided on theboiler, if desired, to re tain and condense any desirable products thatmay be distilled when the boiler.is heated.

The arrangement ofv the pipes is such that the bath can be transferredfrom the boiler to the still direct through the pipes g and a or throughthe circulating-coil, as desired, and may be returned to the boilerthrough the pipes s and w without reversing the pump. The constantcirculation of the bath through the heated coil permits an equabletemperature to be maintained, so that the effect upon the wood isuniform, as every piece is subjected to the same heat. The perforationsin the supply-pipe provide means for spraying or reducing the bath to afinely-divided condition, thus facilitating the escape of the desiredproducts.

tract therefrom oils, resins, &c., a still adapted to hold the wood, aboiler for containing and heating a bath, a hood and condensingcoil forthe still, a hood and condensmg-coil for the boiler, and a pump totransfer the bath from the boiler to the still.

2. In an apparatus for treating wood to extract therefrom oils, resins,&c., the combination with a boiler, a still, and a heating-coilcommunicating with the boiler and the still, of a pump communicatingwith each of said parts, substantially as described.

3. In an apparatus for treating wood to ex tract therefrom oils, resins,&c., the combination with a still, a boiler for heating a bath, aheating-coil on the exterior of the still and connecting the boiler andthe still, and a pump communicating with the still, coil and boiler,substantially as described.

4. In an apparatus for treating wood to ex tracttherefrom oils, resins,&c., astill, a boiler for containing and heating a bath, a pipecommunicating with said still and boiler to supply the bath to thestill, a pump in said pipe, and an outlet-pipe communicating with saidstill and connected with the supply-pipe at a point between the pump andthe boiler to remove the bath from the still and return the same to theboiler.

5. In an apparatus for treating wood to extract therefrom oils, resins,&c., a boiler for heating a bath, a still to hold the wood,asupply-conduit from the boiler to the still, a pump in saidsupply-conduit, and a return-conduit from the still to the boiler whichpasses through the pump in the same direction as the supply-conduit,whereby the bath may be returned to the boiler without reversing thepump.

6. In an apparatus for treating wood to ex tract therefrom oils, resins,&c., a boiler for heating a bath, a still to hold the wood, asupply-conduit from the boiler to the still, a pump in saidsupply-conduit, a return-conduit from the still to the boiler whichpasses through the pump in the same direction as the supply-conduit,whereby the bath may be returned to the boiler without reversing thepump, and valves in said conduits to control the circulation of thebath.

7 In an apparatus for treating wood to extract therefrom oils, resins,&c., a boiler for heating a bath, a still to hold the wood, asupply-pipe from the boiler to the still, a pump in said supply-pipe,two return-pipes one of which connects the still to the supply-pipe at apoint between the pump and the boiler and the other of which connectsthe boiler to the supply-pipe at a point between the pump and the stillwhereby the bath may be returned to the boiler without reversing thepump, and valves in said pipes to control the circulation of the bath.

8. In an apparatus for treating wood to extract therefrom pils, resins,&c., a boiler for heating a bath, astill to hold the wood, asupply-conduit from the boiler to the still, a pump in saidsupply-conduit, a heating-coil in said supply-conduit between the pumpand the still, a pipe connecting the bottom of the still with thesupply-conduit between the pump and the boiler, whereby the bath may becirculated through the heating-coil without passing through the boilerand valves in the supply-conduit and said pipe to control thecirculation of the bath.

9. In an apparatus of the class described, a suitable retort for thereception of the material to be treated, a suitable furnace and tank formelting down the material used as a distilling and preserving fluid,means for transferring said fluid from said furnace to said retort,means for heating said fluid during said passage and means for returningsaid fluid fromsaid retort to said tank.

10. In an apparatus of the class described, a suitable retort for thereception of the material to be treated, a suitable furnace and tank formelting down the material used as a distilling and preserving fluid, apipe-line connecting said tank and retort, a heater on said line and apump for delivering said fluid from said tank to said retort and formaintaining a continuous circulation thereof through said heater andretort.

11. In an apparatus of the class described, a suitable retort for thereception of the material to be treated, a suitable furnace and tank formelting down the material used as a distilling and preserving fluid, apipe-line connecting said tank and retort, a pump for delivering saidfluid through said pipe-line to said retort, a valve between said pumpand said tank, a heater on said pipe-line, and connections formaintaining a continuous circulation through said heater and saidretort.

In testimony whereof I sign this application, in the presence of twoWitnesses, this 26th day of January, 1901.

' EDWARD B. WEED.

Witnesses:

G. B. SIDDALL, L. S. LOMMASSON.

IIO

